P0304 on Honda vehicles
90 owner complaints filed with NHTSA about Honda vehicles mention P0304 (Cylinder 4 Misfire Detected) - across 10 models. Below is where it shows up, by model and year.
Can you drive with it? Short careful trips only while the light stays steady. If it starts FLASHING, stop as soon as it is safe - that is the computer reporting active catalyst-damaging misfire, not a suggestion.
Symptoms, likely causes in order and realistic repair costs are on the main P0304 page - they do not differ much by brand. This page shows what is specific to Honda: which models and years actually report it.
Honda models reporting P0304
The number next to each year is how many NHTSA complaints for that car mention P0304. Owners rarely quote trouble codes when complaining, so real occurrence is many times higher - use these numbers to compare years, not as totals.
What Honda owners report
“vehicle may experience driveability issues, which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich) or a whirling noise coming from the engine compartment. POSSIBLE CAUSE Based on certain driving patterns and environmental factors, the DTC's stated above may be set or a whirling noise may occur. Apparently only certain vin numbers were affected, mine is not in the list but im still having the exact same issues.”2017 Honda CR-V · Aug 2026
“Emission warning light along with LKAS, ACC, Brake system are coming on the DASH. No driveability issues. The dealership in Walnut Creek pull code and find P0304 missfire #4 CYCLINDE, test #1 and #2 FAIL. Recommending to replace all 4 injectors.”2017 Honda CR-V · Jul 2026
P0304 on other makes
Makes with enough NHTSA reports of P0304 for their own page.
Counts are NHTSA owner complaints whose text mentions P0304 - owner-reported and unverified. Always confirm with a diagnosis of your specific vehicle.